Platelet Overview Quiz

What is the size range of platelets?

• 1-4 µ

• 20-50 µ

• 40-100 µ

• 150-400 µ

Which clinical condition is associated with thrombocytopenia?

• Myeloproliferative syndromes

• Wiskott-Aldrich syndrome

• Megakaryoblastic leukemia

• Idiopathic thrombocytopenic purpura

What is the life span of platelets?

• 15-20 days

• 4-9 days

• 10-14 days

• 1-3 days

What is the N/C ratio of a megakaryoblast?

• 2:1

• 5:1-3:1

• 1:1

• 1:1-1:12

Which component is NOT found in the organelle zone of platelets?

• Dense granules

• Alpha granules

• Red blood cells

• Lysosomal granules

What is the primary function of platelets?

• Hormone regulation

• Hemostasis

• Nutrient absorption

• Oxygen transport

What triggers platelet activation?

• Calcium

• Oxygen

• Thrombin

• Glucose

Which of the following is a characteristic of a promegakaryocyte?

• Small size

• Multi-lobular nucleus

• Irregularly indented nucleus

• No granules

What is the color of the cytoplasm in a megakaryocyte?

• Light blue

• Dark blue

• Pinkish-blue

• Reddish-purple

Which factor is known as the anti-heparin factor?

• PF2

• PF3

• PF4

• PF1